Which of the following is the immediate drug of choice for an adult patient who has symptomatic sinus bradycardia with a pulse?

The 12-year-old child is brought to the emergency room after being bitten by a family friend’s tarantula. The child is healthy and has received all scheduled vaccinations. Which medication must be given as soon as possible?

The 14-year-old patient was admitted following surgical reduction of an open femur fracture. The patient, who has reported good pain control with the patient-controlled analgesia (PCA) pump, is sleeping peacefully. During hourly rounding, the nurse observes the parent press the button to administer the bolus of pain medication. Which action by the nurse is appropriate?